We can use tan(x) = sin(x)/cos(x). Plug in numbers to get:
tan(x+pi/2) = sin(x+pi/2)/cos(x+pi/2)
Here, you can use the sin and cos addition identity:
tan(x+pi/2) = (sin(x)cos(pi/2)+cos(x)sin(pi/2))/(cos(x)cos(pi/2)+sin(x)sin(pi/2))
If you simplify this, you get:
0+cos(x)/0-sin(x)
Which is the definition of cot(x). But, we can't forget about the '-' sign, so, the answer is -cot(x)
Answer: 9
Step-by-step explanation:
3+3+3=9
Answer:
20
Step-by-step explanation:
19+76+12+53+23=183$
she had 325
325-183= 140
therefor 140$- 120$ would leave Tasha with 20
Answer:
left handed
Step-by-step explanation:
(1)
Cuz "[]" is in included
"()" isn't.
